電気化学的に媒介されたチタン (III) 基の金属有機フレームワーク
Alexandra M Antonio1, Joel Rosenthal1, Eric D Bloch1
1Department of Chemistry and Biochemistry , University of Delaware , Newark , Delaware 19716 , United States.
Journal of the American Chemical Society
|July 10, 2019
まとめ
研究者は,高品質のチタン基金属有機フレームワーク (MOF) を作成するための新しい電気合成方法を開発しました. このアプローチは安価な前駆物質を使用し,先進的なMOF材料へのよりアクセシブルな経路を提供します.
科学分野:
- 材料科学
- 無機化学
- 電気化学
背景:
- 協調性不飽和サイトを持つ金属有機フレームワーク (MOF) は一般的であるが,酸化還元活性カチオンを持つものは稀である.
- タイタンベースのMOFを合成するための既存の方法は,しばしばTiCl3のような高価で空気敏感な前駆体に依存しています.
研究 の 目的:
- タイタン (III) 基MOFを製造するための効率的で費用対効果の高い電気合成方法を開発する.
- Ti (III) -MIL-101,Ti (III) -MIL-100,および新しい拡張されたTi (III) -MIL構造の合成を実証する.
- レドックス活性金属カチオンでMOFを作るための新しい方法論を確立する.
主な方法:
- Ti4+前駆体 (TiCl4) の電気触媒的還元により,Ti3+種を in situ 生成する.
- 電気化学的に生成されたTi3+をMOF構造を形成するために利用する溶熱合成.
- 様々な物理的方法 (例えば,XRD,BET) を使用して合成されたMOFの特徴づけ.
主要な成果:
- Ti(III) -MIL-101を合成し,TiCl3から作られたサンプルと比較して構造が同一で品質が高くなった.
- 電気合成によるTi (III) -MIL-100と2つの新しい拡張されたTi (III) -MIL構造の最初の合成を達成した.
- 電気合成されたMOFが従来のMOFよりも優れていることを実証した.
結論:
- 電気化学的調停は,高品質のチタン (III) 基MOFへの簡単で費用対効果の高いスケーラブルな経路を提供します.
- この方法は,高価で敏感な前駆物質に関連する制限を克服します.
- 開発された電気合成戦略は,多様なブリッジリングリガンドに適用可能であり,新しい酸化還元活性MOF合成の道を開く.
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